below is an answer to
this question on the DaVa thread. i'm trying to divert 'dongle' and LFD questions away from the DaVa thread to respect DaVa info.
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seriously; a 'dongle' is a work-around for any interconnect interface limitation. since the DIN connector is a particularly restrictive interface, and the signal there is tiny and vulnerable, with little space for the 4 interconnect wires coming together, the most obvious spot for a dongle. so seriously 'mental' obsessed listeners build 'contraptions' both for inside chassis and outside chassis to optimize signal flow. these are nothing any commercial product might ever have. for extreme approaches only. "Natural Sound" (TM) folks would soil themselves even having the thought about it cross their mind (the extreme opposite of their thinking).
easy to roll one's eyes and snicker. but best to listen if you get a chance. we go crazy about all sorts of things in this hobby.....this is just one more thing like that. not better or worse. it just is. no different than rolling tubes. or resonance approaches. or even circuit parts choices. cables as components.
the wires inside the dongle are chosen, sized and assembled without normal wire limitations and tuned. it turns out that the last few inches of a cable can have significantly greater signal significance than the main length. so you can put more into it. you can see in Sam's pics he uses a dongle at the preamp end of his interconnect and it's a crazy looking dongle without any sleeve; it's naked. so no rules. Sam was able to spend some extended listening time at Mik's auditioning these beasts and had to have a few. i've bought my one "on faith" with Mik.
Mik teases me that i'm in love with pretty things (gear, tt's arms, etc....stuff i can see), but don't appreciate the significance of what wires can do for the music. it's where he has really gone crazy. but it's a hard subject to talk about as it's hard to relate to. and he is right about how people judge things and what attracts people to gear. and don't confuse crazy commercial cables with what Mik is doing. this is not in any way about packaging....or marketing.....or vertical distribution networks.
the LFD dongle i bought from MIk is mid way (or maybe lower level) up the 'crazy' meter of exotic dongles. Mik is going to provide me with some specific build details from LFD (Richard Bews) for mine. for a few years Mik and i have spoken about how big a leap these things can push things. he finally tipped me over since i already had the LFD Raptor on hand which can be partnered with the dongle.
as far as what it affects my initial impression is of a level of overall musical calmness and expansiveness, along with hearing deep into the music. the DaVa had been a bit rough sounding compared to my Etsuro Golds. now it's equal or better in refinement. and adding other things, the dongle is new and fresh and just starting to open up.
is there a trade-off besides cost? nothing at all i can hear. ask me in 6 months.